BenzWorld Junior Member
Date registered: May 2007
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Changed the plugs, zero improvement. Fuel rail is fine.
I can hear a sucking sound from the drivers side of the engine, which I was hoping was a vacuum leak, but so far I don't think so.
I need to check the egr, does anyone know where it is located on an E420? I think it could be stuck open. Which should throw the 455 code.
Has anyone had an intake manifold leak? I'm thinking it is one of these two things, but I'm leaning towards the egr....